阅读下面短文并回答问题，然后将答案写到答题卡相应的位詈卜（请注意问题后的词数要求）。
[ l ]On the 15th of each month, a classroom at Pointers Run Elementary School in Maryland is packed with volunteers Students like Campbell Snoddy collect food         ____________by students, parents and teachers from each classroom．Then, the children check to make sure the food isn't too old．After that, they sort it by category and put the cans and boxes into bags to be delivered to low -income senior citizens in the community．
[ 2 ] “I wanted to teach my daughter about charity．” says Julie Rosenthal, Who started the nonprofit program six years ago． "And I wanted to teach other kids in the community, too．"
[ 3] Children make their deliveries around the 15th of the month when money from monthly Social
Security checks begins to run out and tough decisions between food and other needs have to be made．
[4 ] "I am on a fixed income and the food has helped me out considerably," says Linda Testennan, a food receiver．
[5 ] “ It was really fun, and it was great to make the senior citizens happy,” says Campbell． “ It was really cool．”
[6 ] Sofia Merkowitz, another Food on the 15th volunteer, agrees．"I really liked it because it made me feel really good that people were so happy that they got food．"
[7]Rosenthal says that is why she has children do more than fill a bag with donated food．        
[8 ] "We want the children to have firsthand experience delivering the food to the people so that they can get that feeling of really making a difference in somebody’s life, a positive difference．"
[ 9] The program started with one school delivering 30 bags of groceries． It has grown each year, and now involves 10 schools and several churches．Food on the 15th has delivered more than12, 000 bags so far．Rosenthal's goal is to expand Food on the 15th across the country and around the world．
What is the passage mainly talking about? （no more than 10 words）
                                                                                     
List three things that the students do with the food in the program "Food on the 15th" （ no more than 20 words）
                                                                                     
Fill in the blank in the first paragraph with proper words to complete the sentence．（ no more than 3 words）
                                                                                      
On what purpose did Julie Rosenthal start the non - profit program? （ no more than 15 words）
                                                                                             
What does the underlined word "it"  in Para 5 probably mean? （ no more than 6 words）